2180984 has 32 divisors (see below), whose sum is σ = 4483920. Its totient is φ = 988416.

The previous prime is 2180963. The next prime is 2180993. The reversal of 2180984 is 4890812.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2180984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6812 + ... + 7124.

2^2180984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2180984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2241960).

2180984 is an abundant number, since it is smaller than the sum of its proper divisors (2302936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2180984 is a wasteful number, since it uses less digits than its factorization.

2180984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 2180984 is about 1476.8154928765. The cubic root of 2180984 is about 129.6833318155.

The spelling of 2180984 in words is "two million, one hundred eighty thousand, nine hundred eighty-four".